2-t-Butyl-1,3,4-thiadiazol-5-yl Isocyanate → 2-[1-Methyl-3-(5-t-butyl-1,3,4-thiadiazol-2-yl)ureido]acetaldehyde

HRID 1973323Notes

Reaction equation

HRID 1973323 reaction equation
[C:1]([C:5]1[S:9][C:8]([N:10]=[C:11]=[O:12])=[N:7][N:6]=1)([CH3:4])([CH3:3])[CH3:2].[CH3:13][NH:14][CH2:15][CH:16]=[O:17]>C1C=CC=CC=1>[CH3:13][N:14]([CH2:15][CH:16]=[O:17])[C:11]([NH:10][C:8]1[S:9][C:5]([C:1]([CH3:4])([CH3:2])[CH3:3])=[N:6][N:7]=1)=[O:12]

Participants

4

Reactant 2

HCID 64524562-t-Butyl-1,3,4-thiadiazol-5-yl IsocyanateHCID 133161322-(Methylamino)acetaldehyde

Product 1

HCID 203097752-[1-Methyl-3-(5-t-butyl-1,3,4-thiadiazol-2-yl)ureido]acetaldehyde

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent2×

Procedure

A mixture of 5-t-butyl-1,3,4-thiadiazol-2-yl isocyanate dimer (6 grams), the dimethyl acetal of 2-methylaminoacetaldehyde (3.9grams) and benzene (50 ml) was charged into a glass reaction flask equipped with a mechanical stirrer and reflux condenser. The reaction mixture was heated at reflux, with stirring for a period of about 5 minutes. After this time the reaction mixture was stripped of benzene to yield an oil which solidified upon standing. The resulting solid was then recrystallized from pentane to yield the desired product the dimethyl acetal of 2-[1-methyl-3-(5-t-butyl-1,3,4-thiadiazol-2-yl)ureido]acetaldehyde having a melting point of 80°-82° C.

Workup

  1. customequipped with a mechanical stirrer
  2. temperaturereflux condenser
  3. temperatureThe reaction mixture was heated
  4. temperatureat reflux
  5. customto yield an oil which
  6. customThe resulting solid was then recrystallized from pentane

Sources & evidence

ORD record
ord-90136b00b4434782bcc38bda5ad69b88
Source dataset
uspto-grants-1976_12
Patent number
US03997321

Reaction notes

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